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Biomedical subjects

T Fujimoto

Publications and source records attributed to T Fujimoto.

At least 775 records · Page 43Linked to original sources
PubMed1980

[Subacute toxicity study of lentinan in rats. 5-week intravenous treatment (author's transl)].

Male and female JCL : SD rats were treated intravenously with lentinan in 5% mannitol solution at dose levels of 0, 0.03, 3.0 and 30.0 mg/kg/day for 5 weeks. Rats receiving 0.3, 3.0 and 30.0 mg/kg/day showed reddening in ear, tail and scrotum and edema in legs and scrotum after day 3 of treatment. Males receiving 30.0 mg/kg/day gained less body weight than control. Occult blood was found in the urine of rats receiving 30.0 mg/kg/day. With regard to haematology, rats from the treatment groups had low mean values relating to red blood cell count, packed cell volume and haemoglobin, while high white blood cell count were recorded for these rats. Biochemical examinations revealed decreases in albumin level and A/G ratio and increases in beta-globulin and gamma-globulin levels for rats from the treatment groups. Slightly high values of BUN were showed for rats receiving 30.0 mg/kg/day. Organ weight analysis showed dose-dependent increase in the spleen, liver and adrenal. Histopathological changes attributable to treatment included (1) changes in reticuloendothelial system such as proliferation of reticular cells and micronodule of epithelioid cells in the spleen, liver and lymph nodes; (2) arteritis in many organs especially notable in epididymis, intestines and mesentery; (3) haemorrhagic changes in lung, intestines and urinary bladder and secondary changes such as increased chronic nephropathy, hypospermatogenesis, spermatic granuloma in epididymis and granulomatous inflammation in ear, tail and scrotum. The maxim safe dose was estimated to be smaller than 0.03 mg/kg/day for males and 0.03 mg/kg/day for females in the present study.

Animals↗
PubMed1980

[Treatment of whooping cough and whooping cough syndrome by cefoperazone (author's transl)].

Clinical trial of cefoperazone (CPZ) for the treatment of whooping cough and whooping cough syndrome was performed and the following results were obtained. 1) In 18 cases suffering from whooping cough, CPZ was given 47 approximately 106 mg/kg/day (average 72 mg/kg/day) by intravenous route. The clinical efficacy rates judged by doctors in charge were 44% on the 3 rd day, 75% on the 7 th day, 86% on the period day. And in these cases, the clinical efficacy rates judged by committee members were 56%, 83% and 86%. 2) In 6 cases diagnosed as whooping cough syndrome, CPZ was given 49 approximately 96 mg/kg/day (average 59 mg/kg/day) by the same route. The clinical efficacy rates judged by doctors in charge were 67% on the 3 rd day, 80% on the 7 th day and 75% on the period day. And in these cases, those judged by committee members were 83%, 80% and 100%. 3) In 1 case, Bordetella pertussis was searched and showed 0.012 mcg/ml of MIC. It was eliminated on the 1 st day after administration. 4) Doctors in charge judged the utility of CPZ for whooping cough. Twelve cases were useful and 6 cases were slightly useful. 5) No side effects were observed except for elevation of GOT and LDH. These results suggest that CPZ might be useful drug against whooping cough.

Bordetella pertussis↗
PubMed1979

Prevention by tiopronin (2-mercaptopropionyl glycine) of methylmercuric chloride-induced teratogenic and fetotoxic effects in mice.

Previous investigations (Fuyuta et al., '76, '79) have shown that a single oral administration of 25 mg/kg methylmercuric chloride (MMC) to pregnant ICR mice on day 10 of pregnancy induced cleft palate in a remarkably high incidence in fetuses. Based on these findings, the present study dealing with the prevention of cleft palate by Tiopronin, (2-mercaptopropionyl glycine, Tp), was initiated. Twenty females in the positive control group were given 25 mg/kg MMC orally on day 10 of pregnancy and then given physiological saline intraperitoneally. Twenty females in the negative control group were given distilled water orally and then given saline intraperitoneally. Cleft palate was found in 98.1% of fetuses in the positive control group and none of them in the negative control group. Twenty females were pretreated with a single oral dose of 25 mg/kg MMC on day 10 of pregnancy and were posttreated with Tp intraperitoneally, immediately and at every 24, 48 and 72 hours after the MMC treatment. The doses of Tp were 320, 160 and 80 mg/kg/day. The incidences of cleft palate in fetuses were reduced to 1.49, 31.3 and 47.8% in the Tp-treated groups with the doses of 320, 160 and 80 mg/kg/day, respectively. Tiopronin could effectively prevent the expected incidence of cleft palate. Other types of abnormalities as well as fetotoxicity represented by reduced fetal body weight were also effectively prevented with the Tp-treatment.

Abnormalities, Drug-Induced↗
PubMed1979

Small cell carcinoma of the lung and its histological origin. Report of a case.

A rare lung cancer consisting in part of small cell carcinoma of intermediate cell type and in part of well-differentiated papillotubular adenocarcinoma is described. Alcian blue-PAS staining was observed in the cytoplasm of the small cell carcinoma cells; the Grimelius argyrophil reaction was also positive in the cytoplasm of these cells. Electron microscopy revealed neurosecretory granules in the cytoplasm. At autopsy, a small cell carcinoma of intermediate cell type was found with both squamous features and gland formation. The cellularity and histological pattern of this tumor suggested the existence of a transitional pattern between small cell carcinoma of intermediate cell type, squamous cell carcinoma and adenocarcinoma. From the above findings, we think that small cell carcinoma including the intermediate cell type is derived from respiratory epithelial cells of endodermal origin with dedifferentiation of those cancer cells into neurosecretory cells.

Adenocarcinoma↗
PubMed1979

Teratogenic effects of a single oral administration of methylmercuric chloride in mice.

The teratogenic effects of methylmercuric chloride (MMC) given orally as a single dose to pregnant ICR mice on day 10 of gestation were examined. The doses tested were 25, 20, 15 and 10 mg/kg. Controls received distilled water orally. Each group consisted of 20 females. Fetuses were taken on day 18 of gestation for teratological study. The number of resorbed or dead embryos was moderately increased in the 25 mg/kg group. Fetuses from dams given 25, 20 and 15 mg/kg MMC weighed significantly less than those in the control group. Many fetuses with malformations were observed in the treated groups; cleft palate occurred in 100, 58.6 and 28.0% of fetuses from dams given 25, 20 and 15 mg/kg MMC, respectively (statistically significant). Hydronephrosis appeared in 23.8 and 18.5% of fetuses from dams given 25 and 20 mg/kg MMC, respectively (statistically significant). Skeletal variations, incomplete ossification of sternebrae, for example, were also observed in the treated groups. These results indicate that MMC is teratogenic so far as cleft palate is concerned and embryotoxic in ICR mice.

Abnormalities, Drug-Induced↗
PubMed1979

Two cases of rubella infection with cardiac involvement.

During the prevalence of rubella infection in Japan in 1975, we experienced 2 cases complicated with cardiac involvement: a 40-year-old housewife and a 52-year-old man. These 2 cases showed enlarged cardiac silhouettes and bilateral pleural effusion on the chest X-ray films. Pericardial effusion was demonstrated by echocardiogram and cardiac RI pool scintigram. A myocardial biopsy specimen showed slight cell infiltration in Case 1. The anti-rubella antibody titer rose from 128x to 4096x in Case 1 and from 265x to 1024x in Case 2. From these findings Case 1 was diagnosed as rubella pancarditis and Case 2 as pleuropericarditis. Only 4 cases with the cardiac involvement of rubella was reported in the past.

Adult↗